A bank may be perfectly solvent one minute and collapse from...

A bank may be perfectly solvent one minute and collapse from a bank run the next. A stock may skyrocket one day on news it got billions from a cash infusion, and crater the next even though nothing material has changed in the intervening period. These are general sketches — depositors did have reasonable concerns about Silicon Valley Bank's losses, for example — but the general principle holds. In other words, a bank's stock — or that of any other company — may not necessarily reflect the health of its balance sheet, even though a correlation may seem apparent. $SPDR S&P 500 ETF (SPY.US)$ $Invesco QQQ Trust (QQQ.US)$ $S&P 500 Index (.SPX.US)$ $Dow Jones Industrial Average (.DJI.US)$ $Nasdaq Composite Index (.IXIC.US)$